晶闸管两端并联一个RC电路的作用是()。
A.分流
B.降压
C.过电压保护
D.过电流保护
参考答案:C
Most of today’s youngsters prefer to ______ to their favorite journals online because they think it is both trendy and handy.
A.contribute
B.resort
C.subscribe
D.relate
一辆货车倾斜55mm可以编入列车。